Probing Planckian physics: Resonant production of particles during inflation and features in the primordial power spectrum

1999/10/21 by Daniel J. H. Chung, Edward W. Kolb, Antonio Riotto +2 · 2 citations
Earth and Planetary Sciences · Physics and Astronomy · #Anisotropy #Astrophysics #Cosmic microwave background #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Geophysics and Gravity Measurements #Inflation (cosmology) #Inflaton #Particle (ecology) #Particle physics #Physics #Planck #Production (economics) #Quantum electrodynamics #Quantum mechanics #Resonance (particle physics) #Scale (ratio) #Spectral density #Theoretical physics #astro-ph #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.62.043508

published as Phys.Rev. D62 (2000) 043508 · 19 pages, 11 eps figures

arxiv created 1999/10/21 · openalex publication_date 2000/07/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The phenomenon of the resonant production of particles after inflation has received much attention in the past few years. In a new application of the resonant production of particles, we consider the effect of a resonance during inflation. We show that if the inflaton is coupled to a massive particle, resonant production of the particle during inflation modifies the evolution of the inflaton, and may leave an imprint in the form of sharp features in the primordial power spectrum. Precision measurements of microwave background anisotropies and large-scale structure surveys could be sensitive to the features, and probe the spectrum of particles as massive as the Planck scale.

Citations

• A built-in scale in the initial spectrum of density perturbations: Evidence from cluster and CMB data
• Quantum Fields in Curved Space
• Cosmology in the Next Millennium: Combining Microwave Anisotropy Probe and Sloan Digital Sky Survey Data to Constrain Inflationary Models
• Primeval Adiabatic Perturbation in an Expanding Universe
• CDM models with a BSI step-like primordial spectrum and a cosmological constant
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Spontaneous creation of almost scale-free density perturbations in an inflationary universe
• Towards the theory of reheating after inflation
• Can Baryonic Features Produce the Observed 100 [CLC][ITAL]h[/ITAL][/CLC][TSUP]−1[/TSUP] M[CLC]pc[/CLC] Clustering?

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